URD-0008SK-8 – Unitronics RO8,MOS,240VDC/AC,0.5A,18R

Why Choose the Unitronics URD-0008SK-8 Solid State Output Module?

The Unitronics URD-0008SK-8 is a compact 8-channel solid state relay output module designed for the UniStream Remote I/O platform. It provides eight MOS solid state relay outputs capable of switching AC or DC loads up to 240 V, making it suitable for controlling actuators, signalling devices, relays and other industrial loads within distributed PLC automation systems.

Installed within a UniStream remote I/O assembly, the module communicates with a remote Ethernet I/O adapter that connects to the PLC controller. This distributed architecture allows engineers to install I/O modules close to field equipment, reducing wiring complexity while enabling scalable automation systems.

Using solid state relay technology, the URD-0008SK-8 delivers silent switching, fast response and long operational life compared with mechanical relay outputs, making it ideal for modern industrial control systems requiring reliable high-cycle switching.

Key Advantages

• Eight solid state relay outputs for industrial automation control.
• AC or DC load switching up to 240 VAC / 240 VDC.
• 0.5 A output current rating per channel.
• Silent MOS relay switching with no mechanical wear.
• Designed for the Unitronics UniStream Remote I/O system.
• Ultra-slim DIN-rail module suitable for high-density control panels.

Key Features

• 8 × solid state relay outputs.
• Output type: MOS solid state relay.
• Maximum load voltage: 240 VAC / 240 VDC.
• Maximum current: 0.5 A per channel.
• LED indicators showing output status.
• Removable terminal block for easy field wiring.
• DIN rail mounting for industrial control cabinets.

Technical Specifications

• Manufacturer: Unitronics
• Series: UniStream Remote I/O
• Model: URD-0008SK-8
• Module type: Solid state digital output module
• Outputs: 8 MOS solid state relay outputs
• Maximum load voltage: 240 VAC / 240 VDC
• Output current: 0.5 A per channel
• Connection: removable terminal block
• Mounting: DIN rail
• Supply voltage: 24 V DC nominal
• Module dimensions: approx. 12 mm × 99 mm × 70 mm
• Operating temperature: −40 °C to +70 °C
• Protection rating: IP20

Distributed PLC Automation

UniStream Remote I/O systems enable distributed automation architectures by allowing multiple I/O modules to be installed on a DIN rail and connected to a PLC through a remote Ethernet adapter. A single adapter can support dozens of remote modules, enabling flexible expansion across machines and production lines.

Solid state relay modules such as the URD-0008SK-8 provide maintenance-free switching and improved reliability in applications requiring frequent switching cycles.

Typical Applications

• Industrial machine automation systems.
• Control of solenoids, relays and actuators.
• Industrial signalling and indicator devices.
• Distributed PLC I/O architectures.
• Manufacturing and process automation equipment.

Trusted by Automation Engineers

Unitronics UniStream remote I/O modules are widely used by automation engineers and machine builders to create scalable distributed PLC control systems.